Mold for concrete structures.



J. ROBERTSON. MOLD FOR CONCRETE STRUCTURES.

l APPLICATION FILED APR. 8. 1913.

Patented Nov. 17, 1914.

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MOLD FOR CONCRETE STRUCTURES.

Specification. of Letters Patent. Patented Nov. 17,1914.

Application led April 8, 1913. Serial No. 759,767.

T0 all whom it may concern Beit known that I, JAMES ROBERTSON, citizenof the United States, residing at Kearney, State of New Jersey, haveinvented certain new and useful Improvements in Molds for ConcreteStructures, of which the following is a specification.

This invention relates to molds for concrete structures, moreparticularly for concrete buildings or poured houses, and has for one ofits objects to provide a plurality of mold units of varying dimensionsand of novel construction whereby buildings and like structures ofvarious sizes4 and proportions may be readily constructed by transposingand arranging the various mold units to conform to the size of thestructures required.

Another object of the invention is to provide mold units which may bepartly dismembered and rearranged to adapt the device to mold door andwindow openings, partitions, bay windows and other irregularconformation, and the like.

With these and other objects in view the invention consists in certainnovel features of construction as hereinafter shown and described andthen specifically pointed out in the claims, and in the drawingsillustrative of the preferred embodiment of the invention.

Figure l is a portion of the floor plan of a conventional structure withthe improved mold units arranged to form the walls of the same and intransverse section. Fig. 2 is-a front elevation of a part of thestructure illustrated in Fig. 1. Fig. 3 is a perspective view of one ofthe mold units. Fig. 4 is a View similar to Fig. 3 with one of the anglemembers detached, to illustrate the manner of uniting the units at innercorners and where partitions are to be located.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The improved device comprises a plurality of units each formed from aplate 10, and with marginal angle members formed in sections 1l andreinforced at the corners by L or angle members 12. The plates, angle"members and reinforcing members are united by bolts or like detachablefastening devices 13, so that they may be readily dismembered andrearranged as hereafter explained. The plates `are preferably of sheetmetal and of any required size, but the main plates for an ordinaryhouse will generally be about four feet wide and six feet long, and aplurality of minor units will likew1se be provided of varying widths,-but of uniform lengths, and a plurality of minor units of varyinglengths. By this means structures of various sizes and proportions mavbe constructed by combining units 0f varying sizes, as hereafterexplained. For instance, a plurality of the mold units will be providedwith the smallest about six inches wide and six feet long and advancingin regular order of six inch increase of width up to 42 inches, so thatthe narrower units may be united with theside units to form any Width ofwall required. The units being six feet long, if two are placed end toend they will form a complete wall 12 feet high, and if a higher wall isrequired the units may be likewise arranged to any required extent oneabove the other. It will be understood however, that these dimensionsand proportions may be varied as required, and it is not desired tolimit the invention to any specific size or outline of the mold units.

The angle members may be of any required width, but will generally beabout 8 inches wide, and may be of any weight or gage of metal. Theplates l0 are provided with a plurality of apertures around theirmargins to receive the angle member securing bolts, spaced at anyrequired distance apart. but the longer sides of the plates willgenerally be provided with three of the apertures and with two of theapertures located upon the narrower sides. and the angle members will beprovided with similar apertures and registering with the apertures ofthe plate so that clamp bolts may be employed to secure the anglemembers to the plates. By this means the angle members may be readilyremoved when required, as hereafter explained. f

The longitudinal or side angle members extend the full length of thebody or base the bolt apertures being.

form the inner wall face at corners and partitions, one of the sideangle members is removed and the portion of the base from which theangle member has been removed is disposed over the inwardly directed webof the first unit of the adjacent wall with the tongue like portions 16beneath the inwardly directed webs of said rst wall unit and securedthereto by the clamp bolts. By this arrangement the wall units which areto form the inner corners of outer walls or of partition walls may beunited without producing irregularities or unevenness of surface orvisible joints.

When the wall units are to be united as above described, the cornermembers 12 of the unit which receives the tongues 16 will be alsoremoved to avoid the necessity for unduly bending the tongues.

The apertures in the plates,angle memy bers and reinforcing members willbe uniformly arranged so that the parts may be readily interchanged, theobject to be hereafter explained.

A plurality of the plates arearranged side by side with the longersections of the angle members in contact, and with another set of theplates arranged endwise thereon with the shorter sections of the anglemembers in Contact, so that a mold face of any required area may beproduced to correspond to the areaof the wall required.

1n Fig. l is shown a licor plan of a portion of a conventional buildingincluding doors, windows and partitions with the mold units arranged Atoreceive the cement between them. The outer mold face for the outer wallis made up of ,a plurality of lower units arranged side by side and aplurality of upper units located upon the upper ends of the lower unitsand likewise arranged side by side with the abutting angle membersunited by clamp bolts or other similar suitable readily detachabledevices. The 1nner face of the wall is formed by another set of the moldunits spaced a distance equal to the thickness of the wall from theouter set of units with the angle members presented inwardly and unitedand arranged in substantially the same manner as the outer wall.

At the corners of the outer mold structure the angle members of one setof units are located against the outer portion of the face of Liramacent wall, as illustrated in F ig. l. The outer walls will generally beabout 12 inches thick, for an ordinary two-story building, and will beincreased in thickness for higher buildings, while the partitions willgenerally be about 4 inches thick. Where partitions oclcur the moldunits are spaced apart the requisite distance to form the partitions asillustrated in Fig. 1. The mold units will be arranged without openingsof any kind, but Where window, door and other openings are to occurblocks orl frames corresponding in outline to the openings are locatedbetween the walls of the units, as represented at 14, and the cementwhen poured between the units will pass-around the members 14.

The mold units, as noted, are substantially the same in construction,and diier only as to the sizes of the plate members 10, which may bevaried to any required extent to correspond tothe size and proportion ofthe building to be erected or poured.

At suitable intervals the clamp bolts whereby the angle members areunited to the plates 10 will be'replaced by tie rods represented at 15extending transversely of the wall space which thus support the moldunits and prevent them from being distended by the pressure of theconcrete when the latter is poured in to form the wall, and if requiredother clamp bolts 15 may likewise be arranged to unite the intermediateportions of the plates, but generally the plates will be of sullicientstrength to withstand the pressure exerted by the concrete, and will notrequire additional holding means.

Having thus described the invention, what is claimed is:

1. A mold unit comprising a rectangular base member, side angle membersextending the full length of the base and each detachably secured by oneof its webs to the rear face of` the base, and end angle members securedby one web to the rear face of the base, the outer webs of the end anglemembers being cut away to receive the terminals of the side anglemembers vand likewise to produce tongues tol engage the end anglemembers of an adjacent mold unit when the molds are united to form avWall corner and prevent the production of irregularities or unevennessof surface.

2. A mold unit comprising a rectangular base member, side angle membersextending the full length of the base and each detachably secured by oneof its webs to the rear face of the base, end angle members secured byone web to the rear face of the base, the

In testimony whereof I affix my signature in presence of two witnesses.

JAMES ROBERTSON. [1.. 5.]

Witnesses:

HENRY WVM. RHoADs, Jr., DAVID WATSON. l

